Street-lamp and ventilator.



N0. 665,8I7. Patented Ian; 8, I90l.

' W. S. WANDE'LL.

STREET LAMP A ND VENTILATOR.

(Application flleql Sept. 11, 1900.) (No Nodal.) 2 Sheais$haut I.

1 Emma No. 665,3I7. Patented Ian. 8, l90l. W. S. WANDELL'. STREET LAMP AND VENTILATOB.

(Application filed Sept. 1'1. 1900.)

2 Sheets-Sheet 2.

(No Model.)

Uni-TE ATENT FFICE WILBER S. WANDELL, OF HEBRON, OHIO, ASSIGNOR OF ONE-HALF TO WILLIAM M. MOORE, OF GRANVILLE, OHIO.

STREET-LAM P AND VENTlLATO R.

SPECIFICATION formingpart of Letters Patent No. 665,817, dated January 8, 1901. 4

Application filed September 11. 1900. berial No. 29,727. (No model.)

To all whom it may concern:

Be it known that I, WILBER S. WANDELL, a citizen of the United States, residing at Hebron, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Street-Lamps and Ventilators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in lamps for burning natural and artificial gases.

The object of the invention is to provide an improved construction of means for regulating the feed of air and gas so as to adapt the same to intimately commingle and to pro vide a ventilator for the lamp which will effectually prevent smothering or flickering of the flame and permit of the ready discharge of the upward current of hot air.

With this and other minor objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is an elevational view of a lamp and ventilator embodying my invention.

Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is an enlarged detail sectional view through the burner and air and gas feed pipes. Fig. 4 is a detail perspective view of the upper ventilator. Fig. 5 is a central vertical section of the same on an enlarged scale. Fig. 6 is a horizontal section of the upper ventilator. Fig. 7 is a detail sectional view of the bottom ventilator.

Referring now more particularly to the drawings, wherein like reference characters designate corresponding parts throughout the several views, the numeral 1 represents the gas-supply pipe, and 2 the globe, of the lamp.

The supply-pipe is threaded at its lower end into a tubular boss or nipple 3, formed upon the upper end of a vertical air inlet and mixing pipe 4, which is open at its lower end for inlet of air and provided at its upper end with radial branch pipes 5, terminating at their outer ends in burner-sockets 6, connected to or suspended over which are incandescent mantles 7. In this pipe 4 is. arranged a gas-feed pipe 8, concentrically supported and of relatively smaller diameter than said pipe 4 to form an intervening mixing space or chamber 9, in which the air and gas are commingled and after commingling pass to the branch pipes 5. The pipe 8 is provided at or about midway of its length with a partition or diaphragm 10 and is contracted and internally threaded at its lower end, as shown at 11, thus forming an intervening chamber 12 in communication with the pipe 4 through a series of ports or apertures 13. A needle-valve 14 controls a restricted port or passage 15, formed in the partition 10, and has a threaded portion 16 to engage the contracted threaded end 11 of the pipe 8 and at its lower end is formed into or provided with a key or finger-piece 17, by which it may be turned to regulate the downward passage of gas through the port 15. In practice the valve is adjusted to regulate the inlet of gas to the chamber 12, and the gas flows therefrom through the ports or openings 13 into the pipe 4, Where it commingles with the air drawn in through the lower end of said pipe 4 and passes to the burners to be consumed. The inlet of air to the pipe 4 is controlled by a disk valve 18, which may be adjusted to proportion the supply of air as desired.

The globe 2 is connected at its lower end by set-screws 19 to a flanged ring 20 upon the upper portion of a cup-shaped bottom ventilator havingan impert'orate bottom21 and a perforate or foraminous side wall 22, preferably formed of wire-gauze. This ventilator allows air to feed in gradually to effectually support combustion, but prevents sudden gusts of air from flowing upwardly into the globe and blowing out or smothering the flames or causing the same to flicker. The globe is supported at top by a dished coverplate 23, having an outwardly extending flange 24, forming a water-shed. The central portion of this plate is formed with a draft-opening, from which rises a vertical flange 25. The enlarged end of a conical shield 26 seats upon the plate 23 about this flange and is supported concentrically about the pipe 1. This shield is inclosed within an annular casing 27, which is of larger diameter than said shield and is secured at its lower end thereto and to the flange 25 by bolts 28, passed through interposed spacing-washers 29, forming a series of air-outlets 30. The casing 27 extends some distance above the conical shield and is connected at its upper end to a cowl, hood, or cap 31, having oppositely-disposed arched or gabled portions 32, forming openings for the inlet of cold air. This hood is provided with a collar 33, through which a set-screw 34 is passed to secure it, the shield, and cover-plate to the pipe 1. The shield, casing, and hood as thus constructed form a ventilator, controlling the outflow of hot air from the globe to the atmosphere and the inflow of cold air to cool the upper portion of the lamp and prevent sudden gusts of air passing down into the globe and checking the outflow of the current of hot air, and thereby causing the flames to flicker. The heated air passing upwardly through the globe flows outward through the shield 26 and thence up into the central portion of the hood 31 and to the atmosphere through the ports or openings formed by the parts 32, or in some cases the heated air may take a different course and pass downwardly through the shield or casing and out through the outlets 30. The hood 31 prevents the passage of any sudden gusts of air directly down into the lamp-globe, the portions intervening between the arched parts 32 serving to either deflect the air out through the openings formed by said arched parts or down into the casing 27. The air upon entering in this casing is deflected by the shield 26, which causes it to take the course indicated by the arrows in Figs. 2 and 5 and to pass out again to the atmosphere through the outlets 30. By this means the sudden access to the globe of currents of air from above is avoided and a free exhaust of the heated air from the globe obtained, while at the same time the upper portion of the lamp is kept cool.

7 From the foregoing description, taken in connection with the accompanying drawings, the construction and mode of operation of my invention will be readily understood, and it will be seen that it provides a lamp in which an effective commingling of the air and gas is insured and in which flickering or smothering of the light, due to the sudden inlet of air from without, is effectually avoided. The lamp is adapted to use either natural or artificial gas, and the upper ventilator may be employed in connection therewith or with any other type of lamp or device in which the use of a ventilator of this character is neces sary or desirable.

While the particular embodiment of the invention is as herein disclosed, changes in the form, proportion, and minor details of construction may be made within the scope of the invention without departing from the spirit or sacrificing any of the advantages thereof.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a lamp, the combination, with a gassupply pipe, of an air-feed pipe, a mixingchamber open at its lower end and provided at its upper end with one or more burners, a gas-feed pipe support-ed concentrically within said air-pipe and provided with outlets for the flow of gas therefrom into the mixingchamber, and a valve controlling the flow of gas through said gas-feed pipe, substantially as set forth.

2. In a lamp, the combination, with a gassupply pipe, of an air-feed pipe, a mixingchamber connected thereto and provided at its upper end with radial branches terminating in burners and open at its lower end for the inlet of air thereto, a gas-feed pipe supported concentrically within said air-pipe and having a partition therein provided with a port, a lower internally-threaded contracted portion and an intervening chamber provided with ports for the outflow of gas therefrom into the said air-pipe, a valve controlling the said passage in the partition and provided .with a threaded portion engaging the contracted threaded portion of the gas-pipe, and a valve controlling the inlet of air into the lower end of the air-pipe, substantially as set 1 forth.

3. In a lamp, the combination, with a gassupply pipe and globe, of a cover-plate above the globe, and a ventilating device comprising a conical shield rising from said coverplate, a casing surrounding the shield and of larger diameter than said shield to provide a series of outlet-ports at the base thereof, and a hood mounted upon said casing and provided with a series of oppositely-disposed arched portions forming ports in communication with said casing, substantially as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILBER S. WANDELL.

Witnesses:

J. O. ORAWsHAw, MARY A. CRAWSHAW.

IIO 

